Bring a new level of energy to the pins with the new Hammer Amp Up!Amp Up combines Hammer's high revving PowerShot core with a pearlized version of the Overdrive coverstock. With the original Amp, Hammer has a continuous hooking ball that was best in medium to heavy oil. Amp Up gives Hammer bowlers the sharpest backend move since the First Blood, and is best on medium to medium-dry lane conditions. With it's unique Purple/Gold/Green look, the Amp Up will catch a lot of attention on the shelf. Amp Up your pin carry. Or else.